1 /* Copyright (c) 2015, Google Inc. 2 * 3 * Permission to use, copy, modify, and/or distribute this software for any 4 * purpose with or without fee is hereby granted, provided that the above 5 * copyright notice and this permission notice appear in all copies. 6 * 7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ 14 15 #include <openssl/curve25519.h> 16 17 #include <errno.h> 18 #include <stdio.h> 19 #include <string.h> 20 21 #include "internal.h" 22 23 24 static const struct argument kArguments[] = { 25 { 26 "-out-public", kRequiredArgument, "The file to write the public key to", 27 }, 28 { 29 "-out-private", kRequiredArgument, 30 "The file to write the private key to", 31 }, 32 { 33 "", kOptionalArgument, "", 34 }, 35 }; 36 37 static bool WriteToFile(const std::string &path, const uint8_t *in, 38 size_t in_len) { 39 ScopedFILE file(fopen(path.c_str(), "wb")); 40 if (!file) { 41 fprintf(stderr, "Failed to open '%s': %s\n", path.c_str(), strerror(errno)); 42 return false; 43 } 44 if (fwrite(in, in_len, 1, file.get()) != 1) { 45 fprintf(stderr, "Failed to write to '%s': %s\n", path.c_str(), 46 strerror(errno)); 47 return false; 48 } 49 return true; 50 } 51 52 bool GenerateEd25519Key(const std::vector<std::string> &args) { 53 std::map<std::string, std::string> args_map; 54 55 if (!ParseKeyValueArguments(&args_map, args, kArguments)) { 56 PrintUsage(kArguments); 57 return false; 58 } 59 60 uint8_t public_key[32], private_key[64]; 61 ED25519_keypair(public_key, private_key); 62 63 return WriteToFile(args_map["-out-public"], public_key, sizeof(public_key)) && 64 WriteToFile(args_map["-out-private"], private_key, 65 sizeof(private_key)); 66 } 67
